Bump activemq.version from 5.12.0 to 5.15.10 in /ActiveMQTest
Bump activemq.version from 5.12.0 to 5.15.10 in /ActiveMQTest

Bumps `activemq.version` from 5.12.0 to 5.15.10.

Updates `activemq-client` from 5.12.0 to 5.15.10

Updates `activemq-pool` from 5.12.0 to 5.15.10

Updates `activemq-broker` from 5.12.0 to 5.15.10

Updates `activemq-kahadb-store` from 5.12.0 to 5.15.10

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
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